Vacuum packaging and air exchange packaging, PET container production.
With the help of vacuum or compressed gases, many processes in the packaging industry can be automated. Although the production of PET bottles is part of the packaging industry, its processing procedures are the same as that of the plastics industry.
1. Vacuum packaging and air exchange packaging (MAP)
With the help of vacuum or compressed gas, many programs in the packaging industry can automate the packaging industry: inflate the bag to fill the goods; take the bag with the suction way; transport the packing materials and products; attach the label and pack the adhesive with the glue; packing: use the vacuum manipulator to raise the cardboard box and to it Assembly, vacuum packaging and ventilation packaging (MAP); by deoxidization, the shelf life of the corroded products can be prolonged. The simplest thing is to put the product in the bag and evacuate the air. However, due to the influence of environmental pressure on the mechanical force exerted on the shape of the product, the shape of the product can be greatly changed.
For this reason, MAP programs have become an option in many areas. In this program, the product is packaged under the modified gas, and the oxygen is excluded. Blister packaging is used in the vacuum chamber and air is evacuated. Then, the correction gas is injected, and the blister packaging is sealed by a protective film. In this way, even after prolonged storage, the food keeps its original shape and meat food can also maintain its corresponding red color.
Two, PET container production
Although the production of PET bottles is part of the packaging industry, its processing procedures are the same as that of the plastics industry. The application of vacuum technology is as follows:
The drying of plastic particles, the degassing and injection molding of the extruder, the stripping and treatment of the injection molding parts, the blow molding of the dry bottle and the pneumatic conveying of the bottle body are used to set the isolation layer; the filling, filling, labeling packaging, molding, and recycling are set up.